Thanks to suz who kindly confirmed some of my ancestors in the 1851 census in Accrington for me, I have been able to investigate the McDowell family further and I have today discovered another child in the family who died at the age of just 4 days. The child, William McDowell, is recorded in Christ's Church, Accrington burial records on 17th July 1848.
I would now like to try and find out if there is a marked grave for this infant. As far as I'm aware, no other family members died in England. Can anyone offer any guidance on where I should look for grave records? Is there a graveyard attached to Christ's Church? Any help would be gratefully received.